OK, the more I look at this red trailer, the more confused I get. What kind did it start from? The single bar tongue doesn't look like anything I would expect on a Burro or U-Haul, but the shell looks very Burro-esque. So what is it!!

Froggie

PS I found this picture in the random parade at the top of the forum page, so I don't even know where the thread was1